Material: 9341HSS, 4341HSS, 6542HSS, 9342HSS Finish: Titanium Coated Size: 1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5 6.0, 6.5, 7.0, 7.5, 8.0, 8.5, 9.0, 9.5, 10.0~~~13mmfrom3/64~~1/3inch We can supply all kinds of the drills, especially we can do the Non-standard ones for u according to ur specific requirements. As long as u give us the dimensions, we can reply to u immediatedly